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38 Cards in this Set
- Front
- Back
Cardio Vascular System |
Organ system that transports materials such as nutrients, O2 and hormones to body cells and transports CO2 and other wastes from body cells |
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Blood |
A type of connective tissue w/ a fluid matrix called plasma in which red blood cells, white blood cells, and platelets are suspended |
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Red Blood Cells |
a type of cell that has a membrane-enclosed organelles. All organisms except bacteria and archaea are composed of eukaryotic cells |
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Red Blood Cells |
Contains hemoglobin: Iron Containing molecule, picks up oxygen in the lungs (high concentration) Gives up oxygen in areas low in oxygen, formed in bone marrow, circulates 3-4 months, no molecules- can't repair damage, die at rate of 2million/second, dead/dying removed by circulation by liver |
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Why do we need a Circulatory System |
must be able to transport materials to all part of body |
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Parts of Circulatory System |
Blood, Heart, Blood Vessels |
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Some of the materials must be transported throughout the body? |
nutrients, exchange gases, dispose of waste products, needs ultimately extended to every cell in body |
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Parts of Blood |
Plasma, Red Blood Cells, White Blood Cells, Platelets
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Plasma |
Liquid portion of blood, clear/yellow, mostly made up of water, keeps blood pH-7.4, regulates heat contains (Nutrients, Wastes, Antibodies, Hormones, Salts, Proteins) |
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Red Blood Cell Shape |
biconcave sphere, as cells mature, they lose Nucleus+ Mitochondria, Almost the entire volume filled with hemoglobin |
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White Blood Cells |
Leukocytes |
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White Blood Cell Functions |
Immune Defense against Viruses, bacteria, ect, make antibodies |
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distinguishing b/W RBC+WBCs |
RBC smaller, RBC more abundant (except when infection is present), WBC have a nucleus |
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Platelets |
irregularly shaped cell fragments smaller than RBC live for about a week |
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Platelets Function |
formation of blood cells, trigger activation of a cascade of blood proteins |
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Blood Vessels (Arteries) |
Carries blood Away from the heart, carries oxygenated blood |
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Arteries: structure |
thick muscular walls, elastic, branch repeatedly |
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Aorta |
Largest artery |
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Arterioles |
smallest arteries |
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Pulse |
rhythmic stretching of artieries |
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Arterioles & Precapillary Sphincters |
relax and contract in response to, relaxed arteriole has ^ opening so ^ blood flow, contracted arteriole has v opening so v blood flow (body selectively controls the blood flow through the arterioles depending on its needs, Homeostasis) |
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Capillaries: Function |
Materials Cross from blood stream into interstitial fluid baths cells
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Capillaries: Structure |
Very Narrow, one RBC can pass through at a time, thinnest (only one cell think) |
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Capillaries: Movement |
High-Low concentration |
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Veins: function |
Carries blood towards the heart, usually carries deoxygenated blood, has thinner walls than arteries |
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Venule |
smallest veins |
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Veins solve all the problem of getting blood back to the heart |
veins locate next to muscles, valves flaps ensure blood can't flow back |
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Lymphatic Vessels: Problem |
3L more water leaves capillaries then returns> getting fluid back "in Circulation" |
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Lymphatic Vessels: |
dead end at one end and drain at other end, carries lymph |
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Lymphatic Vessels: Function |
Returns Fluid from cells back to circulatory system, fight infections, carry large fat globules that are too large for villi capillaries |
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Elephantiasis |
parasitic roundworm colonizes lymphatic vessels |
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Heart: Coronary: function |
Pump blood through the body |
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Heart: Structure |
Primarily made of muscle, 2 independent pumps (left side and right side), Split into 4 chambers (2 on left and 2 on right), size of fist |
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Pulmonary |
b/w heart and lungs |
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Systemic |
b/w heart and lungs and everywhere else |
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Hepatic-Portal |
B/w heart+ digestive track+ adds nutrients to blood |
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Renal |
B/W heart + Kidney, Removes waste from blood |
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Coronary |
B/W heart+ blood vessels supply heart w/ nutrients |